WET 'N' WILD
Wait till your sister is having friends over. Sneak into her room and put a note on her bed that says, 'Dear Mum, I wet my bed last night. Can you please change the sheets? Love from [insert sister's name].' She'll freak when her mates see it!

PADDLE POO
Get a chocolate bar (the chunkier and nuttier the better) and head to your fam's paddle pool or backyard pool. Drop the choccie bar in and tell everyone that someone has pooed in the water. Watch your whole family freak and jump out!

DAD HEARTS PRANKS
Get your mum to help with this one 'cos your dad will freak. Wait till he's snoozing in the sun and squeeze a heart shape on his back with sunscreen. He'll get a pretty love heart suntan - LOL!

BEACH BANDIT
When you go to the beach, hide your family's gear, like towels and clothes, while they're in the surf. Hilarious!

BUSTED!
Fill up a water balloon and put it under your sibling's pillow. Wait for the water bomb to blow at bedtime!